[CentOS] CentOS 8 and DELL 7540 Intel AX200 WIFI

At Fri, 25 Oct 2019 20:50:02 -0500 CentOS mailing list <centos at centos.org> wrote:

> 
> 
> Hello all,
> 
> 
> I recently bought a brand new Dell Precision 7540 laptop.  Before buying 
> I checked the specifications from the RedHat hardware list and they said 
> that it was "fully RedHat 8 Certified" and listed all the hardware that 
> was "certified" to work with that laptop.
> 
> 
> https://access.redhat.com/ecosystem/hardware/3979771
> 
> 
> I have had good results the last few years with Dell and CentOS, all the 
> equipment has worked fine.
> 
> 
> However, this time, I got the laptop, installed CentOS 8, and the 
> built-in ethernet port works fine but the Intel AX200 Wifi is not 
> recognized and doesn't show up, so I can't use WiFi, but everything else 
> seems to be working fine.
> 
> 
> I verified that it *does* work under Windows 10, so the hardware is 
> there and works fine, it just is not recognized and configured under 
> CentOS 8.

You probably need to install the firmware.  Which is probably in a separate 
package that is not installed by default.

> 
> 
> I called Dell Tech Support and they said "since you didn't buy RedHat 8 
> from us then we can't help you".
> 
> 
> Is this just a temporary problem that an update will soon solve or is 
> this something that needs to be brought to the attention of RedHat?  
> Should I file a bug report with bugzilla.redhat.com or is there 
> something I'm not doing or need to do correctly to get it to work?
> 
> 
> Or is there some package I'm missing that will enable it?
> 
> 
> I was a bit flabergasted because I've gone for so many years without 
> having to do anything special, it all "Just Works (TM)" on my previous 
> computers.
> 
> 
> 
> For technical details, here is what I get when I run "lspci -nn":
> 
> 00:00.0 Host bridge [0600]: Intel Corporation Device [8086:3e20] (rev 0d)
> 00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v5/E3-1500 
> v5/6th Gen Core Processor PCIe Controller (x16) [8086:1901] (rev 0d)
> 00:04.0 Signal processing controller [1180]: Intel Corporation Xeon 
> E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem 
> [8086:1903] (rev 0d)
> 00:08.0 System peripheral [0880]: Intel Corporation Xeon E3-1200 v5/v6 / 
> E3-1500 v5 / 6th/7th Gen Core Processor Gaussian Mixture Model [8086:1911]
> 00:12.0 Signal processing controller [1180]: Intel Corporation Cannon 
> Lake PCH Thermal Controller [8086:a379] (rev 10)
> 00:14.0 USB controller [0c03]: Intel Corporation Cannon Lake PCH USB 3.1 
> xHCI Host Controller [8086:a36d] (rev 10)
> 00:14.2 RAM memory [0500]: Intel Corporation Cannon Lake PCH Shared SRAM 
> [8086:a36f] (rev 10)
> 00:15.0 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH 
> Serial IO I2C Controller #0 [8086:a368] (rev 10)
> 00:15.1 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH 
> Serial IO I2C Controller #1 [8086:a369] (rev 10)
> 00:17.0 SATA controller [0106]: Intel Corporation Cannon Lake Mobile PCH 
> SATA AHCI Controller [8086:a353] (rev 10)
> 00:1b.0 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express 
> Root Port #17 [8086:a340] (rev f0)
> 00:1b.4 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express 
> Root Port #21 [8086:a32c] (rev f0)
> 00:1c.0 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express 
> Root Port #1 [8086:a338] (rev f0)
> 00:1c.5 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express 
> Root Port #6 [8086:a33d] (rev f0)
> 00:1c.6 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express 
> Root Port #7 [8086:a33e] (rev f0)
> 00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:a30e] (rev 10)
> 00:1f.3 Audio device [0403]: Intel Corporation Cannon Lake PCH cAVS 
> [8086:a348] (rev 10)
> 00:1f.4 SMBus [0c05]: Intel Corporation Cannon Lake PCH SMBus Controller 
> [8086:a323] (rev 10)
> 00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH 
> SPI Controller [8086:a324] (rev 10)
> 00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet 
> Connection (7) I219-LM [8086:15bb] (rev 10)
> 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device 
> [10de:1f36] (rev a1)
> 01:00.1 Audio device [0403]: NVIDIA Corporation TU106 High Definition 
> Audio Controller [10de:10f9] (rev a1)
> 01:00.2 USB controller [0c03]: NVIDIA Corporation TU106 USB 3.1 Host 
> Controller [10de:1ada] (rev a1)
> 01:00.3 Serial bus controller [0c80]: NVIDIA Corporation TU106 USB 
> Type-C Port Policy Controller [10de:1adb] (rev a1)
> 02:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co 
> Ltd NVMe SSD Controller SM981/PM981 [144d:a808]
> 03:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co 
> Ltd NVMe SSD Controller SM981/PM981 [144d:a808]
> 04:00.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 
> Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
> 05:00.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 
> Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
> 05:01.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 
> Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
> 05:02.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 
> Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
> 05:04.0 PCI bridge [0604]: Intel Corporation JHL7540 Thunderbolt 3 
> Bridge [Titan Ridge 4C 2018] [8086:15ea] (rev 06)
> 06:00.0 System peripheral [0880]: Intel Corporation JHL7540 Thunderbolt 
> 3 NHI [Titan Ridge 4C 2018] [8086:15eb] (rev 06)
> 3a:00.0 USB controller [0c03]: Intel Corporation JHL7540 Thunderbolt 3 
> USB Controller [Titan Ridge 4C 2018] [8086:15ec] (rev 06)
> 6f:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 
> [10ec:5260] (rev 01)
> 70:00.0 Network controller [0280]: Intel Corporation Device [8086:2723] 
> (rev 1a)
> 
> 
> I believe the Intel AX200 Wifi card is the device 8086:2723 (rev1a) entry.
> 
> 
> Is there something I can do to enable it or is this a bug I need to file 
> with RedHat?
> 
> 
>      - Thanks in Advance
> 
>      - David Summers
> 
> 
> 
> 
> 
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>                                                                                                                                 

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